438275787874420 has 24 divisors (see below), whose sum is σ = 926474380731648. Its totient is φ = 174149319684000.

The previous prime is 438275787874399. The next prime is 438275787874447. The reversal of 438275787874420 is 24478787572834.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72562213516 + ... + 72562219555.

It is an arithmetic number, because the mean of its divisors is an integer number (38603099197152).

Almost surely, 2^{438275787874420} is an apocalyptic number.

It is an amenable number.

438275787874420 is an abundant number, since it is smaller than the sum of its proper divisors (488198592857228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438275787874420 is a wasteful number, since it uses less digits than its factorization.

438275787874420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145124433231 (or 145124433229 counting only the distinct ones).

The product of its (nonzero) digits is 4720558080, while the sum is 76.

The spelling of 438275787874420 in words is "four hundred thirty-eight trillion, two hundred seventy-five billion, seven hundred eighty-seven million, eight hundred seventy-four thousand, four hundred twenty".